444487440 has 80 divisors (see below), whose sum is σ = 1458978048. Its totient is φ = 111556608.

The previous prime is 444487429. The next prime is 444487451. The reversal of 444487440 is 44784444.

It is an interprime number because it is at equal distance from previous prime (444487429) and next prime (444487451).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50392 + ... + 58551.

Almost surely, 2^444487440 is an apocalyptic number.

444487440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444487440 is an abundant number, since it is smaller than the sum of its proper divisors (1014490608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444487440 is a wasteful number, since it uses less digits than its factorization.

444487440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108976 (or 108970 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 39.

The square root of 444487440 is about 21082.8707722644. The cubic root of 444487440 is about 763.1674363878.

The spelling of 444487440 in words is "four hundred forty-four million, four hundred eighty-seven thousand, four hundred forty".